A Physics-based Algorithm for Real-time Simulation of Electrosurgery Procedures in Minimally Invasive Surgery
Identifieur interne : 001E18 ( Main/Exploration ); précédent : 001E17; suivant : 001E19A Physics-based Algorithm for Real-time Simulation of Electrosurgery Procedures in Minimally Invasive Surgery
Auteurs : Zhonghua Lu ; Venkata S. Arikatla ; Zhongqing Han ; Brian F. Allen ; Suvranu DeSource :
- The international journal of medical robotics + computer assisted surgery : MRCAS [ 1478-5951 ] ; 2013.
Abstract
High-frequency electricity is used in a majority of surgical interventions. However, modern computer-based training and simulation systems rely on physically unrealistic models that fail to capture the interplay of the electrical, mechanical and thermal properties of biological tissue.
We present a real-time and physically realistic simulation of electrosurgery, by modeling the electrical, thermal and mechanical properties as three iteratively solved finite element models. To provide sub-finite-element graphical rendering of vaporized tissue, a dual mesh dynamic triangulation algorithm based on isotherms is proposed. The block compressed row storage (BCRS) structure is shown to be critical in allowing computationally efficient changes in the tissue topology due to vaporization.
We have demonstrated our physics based electrosurgery cutting algorithm through various examples. Our matrix manipulation algorithms designed for topology changes have shown low computational cost.
Our simulator offers substantially greater physical fidelity compared to previous simulators that use simple geometry-based heat characterization.
Url:
DOI: 10.1002/rcs.1561
PubMed: 24357156
PubMed Central: 4063934
Affiliations:
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Allen</name></author><author><name sortKey="De, Suvranu" sort="De, Suvranu" uniqKey="De S" first="Suvranu" last="De">Suvranu De</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24357156</idno><idno type="pmc">4063934</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4063934</idno><idno type="RBID">PMC:4063934</idno><idno type="doi">10.1002/rcs.1561</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">001776</idno><idno type="wicri:Area/Pmc/Curation">001776</idno><idno type="wicri:Area/Pmc/Checkpoint">001453</idno><idno type="wicri:Area/Ncbi/Merge">002B80</idno><idno type="wicri:Area/Ncbi/Curation">002B80</idno><idno type="wicri:Area/Ncbi/Checkpoint">002B80</idno><idno type="wicri:doubleKey">1478-5951:2013:Lu Z:a:physics:based</idno><idno type="wicri:Area/Main/Merge">001E40</idno><idno type="wicri:Area/Main/Curation">001E18</idno><idno type="wicri:Area/Main/Exploration">001E18</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A Physics-based Algorithm for Real-time Simulation of Electrosurgery Procedures in Minimally Invasive Surgery</title><author><name sortKey="Lu, Zhonghua" sort="Lu, Zhonghua" uniqKey="Lu Z" first="Zhonghua" last="Lu">Zhonghua Lu</name></author><author><name sortKey="Arikatla, Venkata S" sort="Arikatla, Venkata S" uniqKey="Arikatla V" first="Venkata S" last="Arikatla">Venkata S. Arikatla</name></author><author><name sortKey="Han, Zhongqing" sort="Han, Zhongqing" uniqKey="Han Z" first="Zhongqing" last="Han">Zhongqing Han</name></author><author><name sortKey="Allen, Brian F" sort="Allen, Brian F" uniqKey="Allen B" first="Brian F." last="Allen">Brian F. Allen</name></author><author><name sortKey="De, Suvranu" sort="De, Suvranu" uniqKey="De S" first="Suvranu" last="De">Suvranu De</name></author></analytic><series><title level="j">The international journal of medical robotics + computer assisted surgery : MRCAS</title><idno type="ISSN">1478-5951</idno><idno type="eISSN">1478-596X</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="S1"><title>Background</title><p id="P1">High-frequency electricity is used in a majority of surgical interventions. However, modern computer-based training and simulation systems rely on physically unrealistic models that fail to capture the interplay of the electrical, mechanical and thermal properties of biological tissue.</p></sec><sec id="S2"><title>Methods</title><p id="P2">We present a real-time and physically realistic simulation of electrosurgery, by modeling the electrical, thermal and mechanical properties as three iteratively solved finite element models. To provide sub-finite-element graphical rendering of vaporized tissue, a dual mesh dynamic triangulation algorithm based on isotherms is proposed. The block compressed row storage (BCRS) structure is shown to be critical in allowing computationally efficient changes in the tissue topology due to vaporization.</p></sec><sec id="S3"><title>Results</title><p id="P3">We have demonstrated our physics based electrosurgery cutting algorithm through various examples. Our matrix manipulation algorithms designed for topology changes have shown low computational cost.</p></sec><sec id="S4"><title>Conclusions</title><p id="P4">Our simulator offers substantially greater physical fidelity compared to previous simulators that use simple geometry-based heat characterization.</p></sec></div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Allen, Brian F" sort="Allen, Brian F" uniqKey="Allen B" first="Brian F." last="Allen">Brian F. Allen</name><name sortKey="Arikatla, Venkata S" sort="Arikatla, Venkata S" uniqKey="Arikatla V" first="Venkata S" last="Arikatla">Venkata S. Arikatla</name><name sortKey="De, Suvranu" sort="De, Suvranu" uniqKey="De S" first="Suvranu" last="De">Suvranu De</name><name sortKey="Han, Zhongqing" sort="Han, Zhongqing" uniqKey="Han Z" first="Zhongqing" last="Han">Zhongqing Han</name><name sortKey="Lu, Zhonghua" sort="Lu, Zhonghua" uniqKey="Lu Z" first="Zhonghua" last="Lu">Zhonghua Lu</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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